Electronic Components Datasheet Search |
|
M95M01-RMN6TG Datasheet(PDF) 10 Page - STMicroelectronics |
|
M95M01-RMN6TG Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 39 page Connecting to the SPI bus M95M01-R 10/39 3 Connecting to the SPI bus These devices are fully compatible with the SPI protocol. All instructions, addresses and input data bytes are shifted in to the device, most significant bit first. The Serial Data Input (D) is sampled on the first rising edge of the Serial Clock (C) after Chip Select (S) goes Low. All output data bytes are shifted out of the device, most significant bit first. The Serial Data Output (Q) is latched on the first falling edge of the Serial Clock (C) after the instruction (such as the Read from Memory Array and Read Status Register instructions) have been clocked into the device. Figure 3. Bus master and memory devices on the SPI bus 1. The Write Protect (W) and Hold (HOLD) signals should be driven, High or Low as appropriate. Figure 3 shows an example of three memory devices connected to an MCU, on an SPI bus. Only one device is selected at a time, so only one device drives the Serial Data Output (Q) line at a time, the other devices are high impedance. The pull-up resistor R (represented in Figure 3) ensures that no device is selected if the Bus Master leaves the S line in the high impedance state. In applications where the Bus Master might enter a state where all inputs/outputs SPI lines are in high impedance at the same time (for example, if the Bus Master is reset during the transmission of an instruction), the clock line (C) must be connected to an external pull- down resistor so that, if all inputs/outputs become high impedance, the C line is pulled Low (while the S line is pulled High). This ensures that S and C do not become High at the same time, and so, that the tSHCH requirement is met. AI12836b SPI Bus Master SPI Memory Device SDO SDI SCK CQD S SPI Memory Device CQD S SPI Memory Device CQD S CS3 CS2 CS1 SPI Interface with (CPOL, CPHA) = (0, 0) or (1, 1) W HOLD W HOLD W HOLD RR R VCC VCC VCC VCC VSS VSS VSS VSS R |
Similar Part No. - M95M01-RMN6TG |
|
Similar Description - M95M01-RMN6TG |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |